285673 has 2 divisors, whose sum is σ = 285674. Its totient is φ = 285672.

The previous prime is 285667. The next prime is 285697. The reversal of 285673 is 376582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278784 + 6889 = 528^2 + 83^2 .

It is a cyclic number.

It is not a de Polignac number, because 285673 - 2⁵ = 285641 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 8³ + 6⁷ + 5⁵ + 7² + 3 .

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (285613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142836 + 142837.

It is an arithmetic number, because the mean of its divisors is an integer number (142837).

2²⁸⁵⁶⁷³ is an apocalyptic number.

It is an amenable number.

285673 is a deficient number, since it is larger than the sum of its proper divisors (1).

285673 is an equidigital number, since it uses as much as digits as its factorization.

285673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 285673 is about 534.4838631802. The cubic root of 285673 is about 65.8602030288.

Subtracting 285673 from its reverse (376582), we obtain a palindrome (90909).

The spelling of 285673 in words is "two hundred eighty-five thousand, six hundred seventy-three".